Feeling a little compelled to buy it, as otherwise I'm stuck with a swing arm I can never use.
Tuesday, June 30, 2015
Spares: Wide Version Swing Arm Measurements
Measured the grey "wide version" swing arm. End to end is about 8-5/8". Found a 9" bolt on eBay claiming to be part #90121-028-030, in which case it came out after the 1968 parts guide was published, because that guide only goes up to -020.
Feeling a little compelled to buy it, as otherwise I'm stuck with a swing arm I can never use.
Feeling a little compelled to buy it, as otherwise I'm stuck with a swing arm I can never use.
Ivy: S90 Step Bar from a CM91
Guess I shouldn't be surprised, but as I was getting ready to test Viola's original step bar (which I knew was not stock S90), I happened to notice that Astrid's looked a lot like an S90.
Compared it to Roxy's and it was pretty much the same. I'll have to check if CM91's used the same part, or maybe the same PO who installed the CS90 rotor installed other parts lifted from an S90, too.
Who knew when I bought Astrid that she'd end up being a source for S90 parts!
Compared it to Roxy's and it was pretty much the same. I'll have to check if CM91's used the same part, or maybe the same PO who installed the CS90 rotor installed other parts lifted from an S90, too.
Who knew when I bought Astrid that she'd end up being a source for S90 parts!
Monday, June 29, 2015
Ivy: Saddle Up
Installed the new seat cover from "joemama1931" (Excel Custom Forming) in Saddle Tan. When I first tried wrapping it around the seat, it just didn't seem big enough to stretch down. Ended up removing the thin layer of dark grey soft foam and just leaving the closed cell. After that, the cover fit pretty well.
A bit fiddly the first time, but now having done it, I'm sure it gets easier every time. I realized the first trick is to make sure everything is lined up straight (using the ribbing as horizontal guides, for example). No point in stretching it from front to rear if it's not straight.
Ended up with a strange problem, though. Even though the ribs looked good and straight, I ended up with the right side cutout not being in the right place. Going to contact the seller to ask about it...
A bit fiddly the first time, but now having done it, I'm sure it gets easier every time. I realized the first trick is to make sure everything is lined up straight (using the ribbing as horizontal guides, for example). No point in stretching it from front to rear if it's not straight.
Ended up with a strange problem, though. Even though the ribs looked good and straight, I ended up with the right side cutout not being in the right place. Going to contact the seller to ask about it...
Friday, June 26, 2015
Spares: Late Clutch (Finally) Disassembled
Can't believe it took this long to finally get the clutch from the Late Bottom End apart. I got stymied a few times trying to get the damper springs out first, which was completely the wrong thing to do. It's a little mechanical hubris in not going back to Clymer's to refresh my memory on the procedure.
The first thing I needed to do was compress the clutch, then remove the clip, then remove the springs.
Go figure.
But the even bigger revelation came when I realized that Viola's clutch was NOT an S90 clutch after all. I had always thought this Late spare clutch was the oddity, not having the screws I was familiar with. All the while, it turns out Viola's clutch was actually a centrifugal type. How did I keep missing that fact in the book?
Turns out the true S90 manual clutch is ten times simpler than the centrifugal version, as you'd expect. You compress it, remove the clip, pop out 2 friction plates and 2 steel plates and you're done. I also used 2 sockets (chrome 21mm, black 29mm) on the ends of the compressor tool (instead of a wrench placed crosswise like I used to) which made things even easier.
Finally, when measuring the friction plates, I found they were 2.92mm and since the standard is 2.8-2.9, it means they must be brand new. The springs were also good at 26.6 (with 26mm wear limit).
The first thing I needed to do was compress the clutch, then remove the clip, then remove the springs.
Go figure.
But the even bigger revelation came when I realized that Viola's clutch was NOT an S90 clutch after all. I had always thought this Late spare clutch was the oddity, not having the screws I was familiar with. All the while, it turns out Viola's clutch was actually a centrifugal type. How did I keep missing that fact in the book?
Turns out the true S90 manual clutch is ten times simpler than the centrifugal version, as you'd expect. You compress it, remove the clip, pop out 2 friction plates and 2 steel plates and you're done. I also used 2 sockets (chrome 21mm, black 29mm) on the ends of the compressor tool (instead of a wrench placed crosswise like I used to) which made things even easier.
Finally, when measuring the friction plates, I found they were 2.92mm and since the standard is 2.8-2.9, it means they must be brand new. The springs were also good at 26.6 (with 26mm wear limit).
Astrid: Fixed the Oil Leak!
If you're lucky, this process will work to fix an oil leak:
Removed and replaced that gasket, though oddly enough, it seemed too small to fit, and I ended up tearing it getting it on. Probably should have stopped and opened it up a bit instead of trying to force it. But since the tear was on the right side screw hole, I don't think it's going to leak.
- Clean the surface thoroughly so that you can identify the true source of the leak.
- Pinpoint the leak.
- Replace that gasket.
- Done and done.
After cleaning the head the first time and waiting 24 hours, I didn't see anything leaking. Figured maybe it was only leaking while the engine was running (and pushing oil to the head), which ended up being the case.
The leak seemed to be coming from the points base gasket (at about 7 o'clock) and indeed the gasket seemed damp at that spot.
Removed and replaced that gasket, though oddly enough, it seemed too small to fit, and I ended up tearing it getting it on. Probably should have stopped and opened it up a bit instead of trying to force it. But since the tear was on the right side screw hole, I don't think it's going to leak.
Ran the engine again and... no leaks!!!
It can't always be that easy, can it?
Ivy: Clear Coat
Needed to fix the big chip in the paint and then clear coat the entire frame. Carefully taped everything off and did a couple coats of primer. But when I peeled the tape off, it took another big chip of paint off with it. Doesn't say a lot for the paint if painter's tape can just pull it off like that. Maybe it just needs a week to really cure.
After that, did the usual three coats of clear coat. (and just about used up the can)
After that, did the usual three coats of clear coat. (and just about used up the can)
Wednesday, June 24, 2015
Ivy: Engine Modeling
Had a short session and decided to add the new clutch cover to the Early engine and mount it to Ivy.
Looks nice, though I did knock a big chunk of paint off the bottom of the frame in the process.
Looks nice, though I did knock a big chunk of paint off the bottom of the frame in the process.
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